Bears fans won't like this: Ditka dons Packers gear in McDonald's ad

NEW ORLEANS, LA - JANUARY 26: Head Coach Mike Ditka of the Chicago Bears gets carried off the field after they defeated the New England Patriots in Super Bowl XX January 26, 1986 at the Louisiana Superdome in New Orleans, Louisiana. The Bears won the Super Bowl 46-10. (Photo by Focus on Sport/Getty Images)

Former Bears head coach Mike Ditka put on a Packers sweater-vest in a new commercial. Focus On Sport Getty Images

Cover your eyes, Chicago Bears fans.

Legendary tight end and iconic head coach Mike Ditka stars in this new McDonald's commercial, which is sure to rub many of his old fans the wrong way. In the 15-second spot, the Hall of Famer digs deep into his closet and pulls out one of his famous sweater-vests.